Plant marker stake



FIG. 1 is a front elevational view of a plant marker stake showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view, the right side elevational view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a plant marker stake, as shown and described. 